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Citation and License

Nanoscale Research Letters 2012, 7:259
doi:10.1186/1556-276X-7-259

Published: 18 May 2012

Abstract

This study investigated the pool boiling heat transfer under heating surfaces with
various interlaced wettability. Nano-silica particles were used as the coating element
to vary the interlaced wettability of the surface. The experimental results revealed
that when the wettability of a surface is uniform, the critical heat flux increases
with the more wettable surface; however, when the wettability of a surface is modified
interlacedly, regardless of whether the modified region becomes more hydrophilic or
hydrophobic, the critical heat flux is consistently higher than that of the isotropic
surface. In addition, this study observed that critical heat flux was higher when
the contact angle difference between the plain surface and the modified region was
smaller.